Home / 2,130.32-2,938.55-1,569.60

Finding the Fourth Proportional to 2,130.32, 2,938.55 and 1,569.60

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Solution

The fourth proportional to 2,130.32, 2,938.55 and 1,569.60 is: 2,165.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.32 : 2,938.55 = 1,569.60 : x
  2. Step 2: Convert to fraction form
    2,130.32/2,938.55 = 1,569.60/x
  3. Step 3: Cross multiply
    2,130.32x = 2,938.55 × 1,569.60
  4. Step 4: Simplify right side
    2,130.32x = 4,612,340.23
  5. Step 5: Solve for x
    x = 4,612,340.23/2,130.32
  6. Step 6: Final answer
    x = 2,165.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.